Engine truck



H. H. VAUGHAN.

ENGINE TRUCK.

APPUCAIION FILED,FEB.16.I92I.

i sqc z'mo Patented 00. 31, 11922.

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H. H. VAUGHAN.

ENGINE TRUCK.

APPLICATION FILED FEB. 16, 192:.

mama (Pet. 31, 19322.,

3 SHEETSSHEE1 3.

IIIMLLI IIIIII Patented @ct. 3i, i922.

HENRY H. VAUGHAN, OF 1VIONTREAL, QUEBEC, CANADA.

ENGINE TRUCK.

Application filed February 16, 1921. Serial No. 4.45339.

T 0 all whom it may concern:

Be it known that I, HENRY H. VAUGHAN, of the city of Montreal, Province of Quebec, Dominion of Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in Engine Trucks; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to lower the center of gravity and thereby increase the stability of engine trucks and at the same time reduce the danger of accidents by disorganization of the truck structure and by parts falling onto the track when breakage occurs and to simplify and strengthen the truck.

To this end the invention consists, broadly stated, of a particular arrangement of the parts of the truck thereby obtaining a lower center of gravity; another feature being side frames of inverted U-cross-section enclosing supporting and compensating gear; another feature consisting of a simplified compensating gear including leaf and coil springs and short equalizer bars. the construction and particular arrangement of which protect the engine by preventing complete disorganization and the falling of broken parts onto the track in the event of breakage; still another feature consists of simplifying lateral motion mechanism. My invention also consists of the design, specific construction and particular arrangement of parts hereinafter described with reference to the accompanying drawings.

For full comprehension, however, of my invention reference must be had to the accompanying drawing in which similar reference characters indicate the same parts, and wherein:

Figure 1 is a side elevation of an engine truck partly broken away;

Figure 2 is a plan view of one half of the truck;

Figure 3 is an end elevation partly in sectional view, the section being taken on line AA Fig. 1;

Figure 4 is a sectional view of the journal box showing the means for supporting the equalizer thereon;

Figures 5 and 6 are detail side elevation and plan view of equalizer bars for bridging the axial boxes;

Figures 7 and S are edge and end views respectively of a plate co-acting with and supported by a pair of the safety hangers;

Figure 9 is a detail plan view partly in horizontal section, one of the side frames of the truck removed, the section being taken on line B-B Figure 10;

Figure 10 is a side elevation of the frame partly in vertical sectional view, the section. being taken on line GC Fig. 9;

Figure 11 is an end elevation;

Figures 12, 13, M and 15 are sectional views taken on lines DD, El*l, F F. (1G respectively Fig. 10; and I F igures 16 and 17 are end elevation and face view respectively of a safety hanger.

The principal feature of my improved engine truck isthe side frame of inverted U cross-section, indicated by the reference letter 6 of which there are two to each truck, the top of the middle portion of each of these frames is offset downwardly and located in position in substantially horizontal alignment with the tops of the axle boxes and beneath and. supporting the adjacent end of the bolster which is indicated at 20. One of these frames is illustrated in detail in Figures 9, 10, 11, 12,13, l t and 15. This frame co-acts with comparatively short equalizer bars bridging the axle boxes, these equalizer bars being illustrated in detail in Figures 5 and 6. In order to effect an operative connection between these equalizerbars and the side frame by means of which the load is instantaneously transferred to the frame and through the frame to the axle boxes in the event of the leaf spring breaking, the ends of the frame are of pedestal formation in that they present pedestal legs 6 and 0 straddling the axial boxes. From the legs 0 project arms (Z presenting spring seats (Z each of the equalizer bars consists of two equalizer members 0, a, each of inverted U-cross-section form presenting at its middle a downward extension 7 with a central recess 9 for centering these bars on the axle boxes which are correspondently formed (as indicated at h in dotted lines in Fig. 1) for the purpose. These equalizer members are united at their ends by pins i and j, and on the pin 2' is pivotally carried a spring seat l: which supports a spiral springm on which the end of the frame rests through its spring seat CP. 011 the pin 7' is carried a seat a on which one end of the leaf spring 0 is supported. The opposite end of the leaf spring being sup ported upon a similar seat carried by the inner end of the equalizer bar at that end of the truck, These inner legs 7 of the equala load to the frame through the spring seats I of the equalizers, in the event of the leaf spring breaking. By my improved construction the side frame lends itself to being cast in steel the design having the re quired strength. The leaf spring 0 bearing as it does at its ends on the relatively short equalizer bars performs the function of an equalizer member in that the load is transmitted through spring 0 at the middle thereof and the load of the ends of the frame through the coil springs we, reach the leaf spring through the short equalizer bars. It is evident that the load. is equalized by being distributed uniformly through the equalizer bars to the axle boxes largely by means of the leaf spring and the particular arrangement thereof with regard to the frames and equalizer bars. This particular arrangement imparts considerable advantage to the truck in which it is embedded.

In order to reduce to a minimum the danger of derailment by parts released by breakage from falling onto the track I employ safety hangers s illustrated in detail in Figures 16 and Four of these hangers are required for each engine, two for each side frame. Each of these hangers is of U-form with its lower portion diminished in width as at 8 These hangers straddle the frame and are pivotally secured to it by bolts t. The narrow lower ends 8 of these hangers present a seat for a bottom plate a illustrated in detail in Figures '7 and 8, such bot tom plate being supported at the .rniddle by transverse bolts o carried by legs 5 'l'ormed by downward extensions of the of the frame as seen clearly at the right in Figure 3.

This hanger and bottom plate practically close the lower side of the frame and pre vent any broken pieces of the spring seat from falling on the track.

What I claim is as. follows:

1. In a truck the combination with the axle boxes and bolster thereof, of a side frame of inverted lJ-cross-section having a middle portion, the top of which is in substantially horizontal alignment with the top of the axle boxes and beneath and supporting the bolster, and equalizer gear carried partially within the side frame for the purpose set forth.

2. In a truck the combination with the axle boxes and bolster thereof, of a side frame of inverted U-cross-section having a middle portion, the top of which is in substantially horizontal alignment with the top of the axle boxes and beneath and supporting the bolster, and equalizer gear carried partially within the side frame for the purpose set forth, said equalizer gear including relatively short equalizer bars resting upon the axle boxes, a yielding connection between one end of each equalizer bar and the side frame and a yielding equalizer member extending between the opposite end of said equalizer bar and an adjacent equalizer bar and resting thereon, said side frame bearing upon the yielding equalizer member between its ends.

3. In a truck the combination with the axle boxes and bolster thereof, of a side frame of inverted U-crosssection having a middle portion, the top of which is in substantially horizontal alignment with the top of the axle boxes and beneath and supporting the bolster, and equalizer gear carried partially within the side frame for the purpose set forth, said equalizer gear including relatively short equalizer bars of inverted U- form resting upon and straddling the axle boxes, a spring connection between one end of each of said equalizer bars and the adj a cent portion of the side frame and a yielding equalizer member consisting of an elliptic spring extending between and resting upon the'opposite end of said equalizer bar and an adjacent equalizer bar, said side frame bearing upon the elliptic spring between its ends.

41-.. In a truck the combination with the axle boxes thereof, of a side frame of inverted U-cross-section and equalizer gear carried partially within the same, said equalizer gear including relatively short equalizer bars of inverted U-form resting upon and straddling the-axle boxes, a spring connection between one end of each of said equalizer bars and the adjacent portion of the sideframe and a yielding equalizer member consisting of an elliptic spring extending between and resting upon the opposite end of said equalizer bar and an adjacent equalizer bar, said side frame bearing upon the elliptic spring between its ends.

5. In a truck the combination with the axle boxes and bolster thereof, of a side frame of inverted U-cross-section having a middle portion, the top of which is in substantially horizontal alignment with the top of the axle boxes and beneath. and supporting the bolster, and equalizer gear carried partially within the side frame for the purpose set fort-h, said equalizer gear including relatively short equalizer bars resting upon the axle boxes, a yielding connection between one end of each equalizer bar and the side frame and a yielding equalizer member extending between the opposite end of said equalizer bar and an adjacent equalizer bar and resting thereon, said side frame bearing upon the yielding equalizer member between its ends, means suspended from the side frame in position beneath and extending throughout the length of the yielding equalizer member and adapted to prevent broken parts falling from the side frame onto the track.

6. In a truck the combination with the axle boxes and bolster thereof, of a side frame of inverted U-cross-section having a middle portion, the top of which is in substantially horizontal alignment with the top of the axle boxes and beneath and supporting the bolster, and equalizer gear carried partially within the side frame for the pur pose set forth, said equalizer gear including relatively short equalizer bars resting upon the axle boxes, a yielding connection between one end of each equalizer bar and the side frame and a yielding equalizer member extending between the opposite end of said equalizer bar and an adjacent equalizer bar and resting thereon, said side frame bearing upon the yielding equalizer member between its ends, means suspended from the side frame in position beneath and extending throughout the length of the yielding equalizer member and adapted to prevent broken parts falling from the side frame onto the track, said last mentioned means consisting of a flat metal strip supported at its ends by straps of U-form and at its middle by transverse bolts extending between downward projections on the side frame.

7. In an engine truck the combination with side frames of inverted U-cross-section and adapted to house parts of the truck mechanism, of safety hangers for preventing broken parts falling from the side frame onto the track.

8. In an engine truck the combination with side frames of inverted U-cross-section and adapted to house parts of the truck mechanism, of safety hangers for preventing broken parts falling from the side frame onto the track, such safety hangers consisting of straps straddledand fastened to the side frames and a bottom plate supported partially by the side frame and partially by the straps.

In testimony whereof I have signed my name to this specification in the presence of two witnesses.

HENRY H. VAUGHAN.

Witnesses:

M. J. RUTLEDGE, HELEN I. Conn. 

